Hi Himanshu. Your pic isn't the best to do the exact name to this lycaeneide talking about the point of view and the wings position,but i agree with you,it's really probably that this is a gram blue. A difficult location but good sharpness and a perfect exposure. Have a nice day and thanks,Luciano

Hello Himanshu,
A lovely off center composition showing this beautiful specimen in an attractive pose. We see both upper side and back side of the wings which is a bonus. I like the well saturated colors of both butterfly and its surroundings.
Ron